Silicone Sponge Cord

Key Features Of Silicone Sponge Cord and More

The silicone sponge cord is manufactured from a high-quality silicone rubber material that provides a broad operating temperature and offers excellent electrical insulation properties. It is easy to compress and manipulate and can be vulcanized using RTV silicone adhesive to create an effective watertight seal. It is suitable for long term use in external environments.

The silicone sponge cord & sponge extrusion profiles have outstanding sealing properties due to its high compression force deflection however it has the capabilities and material formulations to cater for low CFD if the application requires it.

Silicone sponge extrusion profiles permit us to achieve exceptional physical properties including tremendously low water absorption preventing water and dust ingress. This is likely due to a uniformed closed-cell structure. Silicone sponge cord made out from different densities provides range of solutions which is suitable to almost any application.

Key Features of Silicone Sponge Cord –

Range of silicone cord can be used with complete safety in food applications, whether the food is dry, aqueous or fatty.

  1. Ideal for applications that require exposure to extreme temperatures (-60° C to +200° C)
  2. Have excellent resistance against ozone/radiation, UV and arc/corona
  3. Silicone Cord is not suitable for contact with oils, solvents, dilute alkalis or concentrated acids.
  4. Density from soft, medium and hard
  5. Wide temperature ranges from 230°C to -60°C
  6. Food grade material for use in food applications
  7. Safe for use with water-based applications
  8. Tight Tolerance

What About the Silicone Cord Applications -?

Silicone sponge and foam cord can be used in an extensive series of applications due to its high-temperature durability, variable densities, and sizes.

  • High-temperature sealing
  • Door/Oven Seals
  • External Electrical Seals
  • Packaging and Food Processing Machinery Seals
  • General Sealing Across Industries

Silicone Sponge Cord Availability

  • 2mm up to 50mm diameter
  • Densities From 200kg/M³ (Soft) To 530 Kg/M³ (Firm)
  • Excellent Ozone, UV And Weathering Resistance
  • Closed Cell Structure
  • Thermally Stable Over A Wide Range of Temperatures (-60°C To 230°C)
  • Colors Available in White, Red, Grey and Black

What are the benefits?

  • Cord can be produced in diameters ranging from 2mm to 50mm.
  • It is cut to length and joined to form rings
  • Thermally stable over a wide range of temperatures (-60°C to 230°C)
  • Superior sealing properties in harsh environments

Rubber Gasket

They are widely used in various industries to fill space between two objects and hence prevent the leakage while under compression. These are providing high pressure sealing under static conditions.

Gaskets are mechanical seals that avoid leaks between separate substrate sections. It is occasionally made of metal because they must be durable enough to withstand extreme pressures and wear. Gaskets, such as O-rings, can be made out of synthetic rubbers or silicone rubber. Thick rubbers are vigorous enough to handle the categories of pressure and conditions associated with gasket applications.

Rubber Gasket Applications

Gaskets are used in a wide variety of applications in a diverse range of environments.

  • O-rings, which is the most common type of gasket, are made of synthetic rubber and account for a large portion of rubber gasket use.
  • It is made out from different rubber material as per application & project needs. It offers excellent commercial as well as industrial sealing & insulation in transportation vehicles, industrial equipment & machineries, door & windows and other applications. They can perform well with other rubber materials, or various kinds of metal and even wood.

Types of Rubbers Used in Gaskets

Due to the multitude of different environments faced by a different application, many types of rubbers are used to manufacture rubber gaskets. Some rubbers need to withstand both extreme cold as well as extreme heat, while others must withstand chemicals that may act as corrosives and could result in deterioration to many types of rubber

  1. Nitrile rubber or Buna-N is a general-purpose rubber with a good temperature range (-65 to 300 degrees F). It will not easily crack due to good wear resistance.
  2. Ethylene Propylene (EPR) works well with hydraulic fluids that are corrosive and dangerous when exposed to human skin. Because of its high resistance to corrosive fluids.
  3. Fluorocarbon is another all-purpose rubber that has a higher temperature range than nitrile rubber. It can be used in many diverse applications such as oils, fluids, and gases, as well as certain types of acids.
  4. Silicone Rubber is classically used for extreme temperatures, but it does not achieve well in applications that require extreme tear resistance or much movement and pressure.
  5. PTFE can withstand very high heat (up to 500 degrees F) while maintaining dielectric strength and chemical inertness. it is used in many applications where water can be an issue because it resists all water.

Why High Temp Gasket Material?

Environmental conditions should be considered when designing an elastomeric gasket or cushioning pad. Excessive heat will steadily reduce rubber materials as well as deteriorate performance.

As a precursor to many rubber tests, heat aging of the rubber material before mechanical testing is typical ASTM D 573, ASTM D 1056, UL 50, UL 48, UL 508, and UL 157 have heat aging requirements. Gaskets and pads visible to high temperature or prolonged heat exposure can show premature failure leading to water ingress.

Silicone is a non-toxic polymer generally made from silica, it can resist heating and freezing without escape or off-gassing, dangerous chemicals. Silicone rubbers are extensively used in industry and there are many constructions. Accurate Rubber Corporation is counted as the best supplier comes up with a wide range of rubber products including High-Temperature Rubber tubing & Gasket and so on.


Many rubbers are available for various working conditions. However, they all have one property in common that is the effect of heat is cumulative and irreversible. Rubber is a significant class of materials for sealing in the medium temperature range because they rapidly return to their original shape when any deforming stress or load is removed.

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